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Recent content by LTD
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Easy way to get chips into floor system?
How about a coolant jet aimed to hose down the area? This could be permanent or programmed into a more advanced system. How about attaching a one way or stiff enough "flapper" plate to some part of the machine that moves along the trough? I've seen that done many times to move...- LTD
- Post #2
- Forum: Machines & Machining engineering
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Flexure material
Hmmm, 126 million cycles... Carbon Fiber will give you exceptional life, and will not affect your voice coil... unequal length "A arm" suspensions like in sports cars come to mind - with precision "swiss" watch maker type jewel bearings. If you can tolerate radial drift...- LTD
- Post #2
- Forum: Mechanical engineering general discussion
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Leaking head gaskets in a large heat exchanger with high delta-T's
Jeff1, This should not be a new problem, and piping bolting flanges manuals might cover it somewhere... But if that fails - you can make a "bolt system" with ANY CTE that you want by using differential expansions of dissimilar materials. Exactly what the fiberglas suggestion was...- LTD
- Post #15
- Forum: Mechanical engineering general discussion
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Propeller Design Analysis
Sounds very much like a school project... School projects are to make YOU solve the problem, the school couldn't care less about propellers. They care about training you how to think. If it's not a school problem, stainless steel propellers can be made in a thinner blade cross section, and...- LTD
- Post #3
- Forum: Mechanical engineering general discussion
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how to make charcoal briquettes ?
http://www.discovery.com/area/skinnyon/skinnyon980123/skinnyon.html Some info there.- LTD
- Post #3
- Forum: Mechanical engineering general discussion
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how to make charcoal briquettes ?
Hector, Surely there are vendors for such machinery? Edison and Henry Ford made charcoal I think - perhaps ideas can be had in their history? Charcoal used to be used in iron smelting too. Larry- LTD
- Post #2
- Forum: Mechanical engineering general discussion
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Air classifiers/Particle Separators
blow the particles up a stack, slightly rotate the plume, and seperate at different heights / diameters of a cone or cyl? How about run 'em up a FAST conveyor belt and launch 'em? You should get a nice ballistic distribution where they land. one belt throws onto a faster belt, onto a faster...- LTD
- Post #3
- Forum: Mechanical engineering general discussion
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Storing energy with mass lifting
Mike, Houses are wimpy and flexible, so lifting one would require a very different foundation that would get to be prohibitive. Dirt and steel are quite cheap however. A little red paint and people would think you had a neat little barn in the back yard... No complicated attachments. You...- LTD
- Post #4
- Forum: Energy engineering general discussion
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Engineering Standards
ScottS, Try looking up MIL-I-45208A military quality standards. It's a good framework to check out. ISO 9000 is simply "Document what you do, and then do what you've documented, and have a way to document and implement improvements" So it won't help you with original system set-up...- LTD
- Post #4
- Forum: Mechanical engineering general discussion
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M.E. Issues
Peer to peer communications in forums like this can sometimes include legetimate contact with engineers from two countries with "prohibited" relations. This has many interesting paths to follow, political, technological (black listed countries will be stunningly behind - especially...- LTD
- Post #2
- Forum: Mechanical engineering general discussion
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Solidworks Advanced User
With the proper visa, you surely can find work if you are pretty good. Language barriers will be less in larger cities. LA has a huge Thai community for example.- LTD
- Post #2
- Forum: Mechanical engineering general discussion
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XY-table design using linear motors & cross roller bearings
Quick notes, I'm rushed but: Graphite / BMI or Graphite / PEEK, or Graphite / PMR15 composite table. Some graphite fiber is VERY good at conducting heat along the fiber... Expensive option, but your application doesn't sound cheap. Graphite (carbon) composites have very very low thermal...- LTD
- Post #2
- Forum: Mechanical engineering general discussion
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Titanium
Craig, Take heed of the warnings you've gotten. Manual machining of Ti is difficult because it LOVES to be climb milled. That's RISKY on all but the best manual machines. Also, DWELLING during the cut is a BAD thing. All sorts of surface effects happen. That not only makes the next cut...- LTD
- Post #5
- Forum: Mechanical engineering general discussion
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Formula for Gas Damper?
Gert, There are available Pyrex cylinders with monolithic graphite pistons that function as dampers. These pistons leak around the diameter though. Do a search under dampers and "graphite piston" and you should find them. You realize that this gadget might get HOT, right? The...- LTD
- Post #2
- Forum: Mechanical engineering general discussion
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Fibreglass design/compositedesign procedure & manuel
Try SAMPE in Covina California. Society for the Advancement of Materials and Process Engineering. They'll have all the referances you need. Every type of composite from Metal Matrix / SiC to bulk Fiberglas. Engineering and Manufacturing too. Try also SME - they have a composites group too -...- LTD
- Post #3
- Forum: Mechanical engineering general discussion
